Remove 'content' dependency from device/media_transfer_protocol

chrome/browser/chrome_browser_main_linux.cc

Index: chrome/browser/chrome_browser_main_linux.cc
diff --git a/chrome/browser/chrome_browser_main_linux.cc b/chrome/browser/chrome_browser_main_linux.cc
index f4dd39252c7b4a81d130df6bf4a90ee3933dcec4..196e9c3a2ebb25580b84743e845ea4f11f01d263 100644
--- a/chrome/browser/chrome_browser_main_linux.cc
+++ b/chrome/browser/chrome_browser_main_linux.cc
@@ -4,11 +4,13 @@
 
 #include "chrome/browser/chrome_browser_main_linux.h"
 
+#include "base/message_loop_proxy.h"
 #include "chrome/browser/system_monitor/media_transfer_protocol_device_observer_linux.h"
 #include "device/media_transfer_protocol/media_transfer_protocol_manager.h"
 
 #if !defined(OS_CHROMEOS)
 #include "chrome/browser/system_monitor/removable_device_notifications_linux.h"
+#include "content/public/browser/browser_thread.h"
 #endif
 
 #if defined(USE_LINUX_BREAKPAD)
@@ -21,7 +23,6 @@
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/env_vars.h"
 #include "chrome/common/pref_names.h"
-#include "content/public/browser/browser_thread.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/settings/cros_settings.h"
@@ -139,7 +140,12 @@ void ChromeBrowserMainPartsLinux::PreProfileInit() {
 #endif
 
   if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kTestType)) {
-    device::MediaTransferProtocolManager::Initialize();
+    scoped_refptr<base::MessageLoopProxy> loop_proxy;
+#if !defined(OS_CHROMEOS)
+    loop_proxy = content::BrowserThread::GetMessageLoopProxyForThread(
+        content::BrowserThread::FILE);
+#endif
+    device::MediaTransferProtocolManager::Initialize(loop_proxy);
     initialized_media_transfer_protocol_manager_ = true;
   }